| 嵌入式三相多功能电表 |
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| 引用本文： | 宫鹏,宫玥,徐淑华.嵌入式三相多功能电表[J].自动化仪表,2012,33(2):83-86. |
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| 作者姓名： | 宫鹏 宫玥 徐淑华 |
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| 作者单位： | 1. 青岛大学自动化工程学院,山东青岛,266071
2. 青岛有线电视网络中心,山东青岛,266000 |
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| 摘 要： | 为测量三相交流电的各种参数,如有功/无功电能、有功/无功功率、电压、电流和功率因数等,设计了一款嵌入式三相多功能电表。在ARM7的基础上,利用单相有效值转换芯片AD637和TLC2543模数转换器进行采样,经数据处理,实现了参数的在线测量和数据远传功能,测量精度可达1S级。该三相电能表具有电压电流相序检测功能,可实现在误接线情况下的负载保护,同时,具有掉电存储和密码保护等功能。试验结果表明,该电表的测量准确度高、抗干扰能力强。
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| 关 键 词： | ARM7 三相三线 AD637 远程测量 相序检测 掉电保护 |
Embedded Three-phase Multi-function Electric Meter |
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| Abstract: | To measure various parameters of three-phase AC electricity,such as active and reactive power,voltage,current,and power factor,etc.,the embedded three phase multi-function electric meter is designed.On the basis of ARM7,by adopting the single phase RMS-to-DC conversion chip AD637 and TLC2543 A/D converter for sampling,and through data processing,the functions of online parameter measurement and data tele-transmission are realized,and reaches the accuracy grade of 1S.This electric meter possesses the detection functions for voltage,current and phase sequence;it is able to protect the load under incorrect wiring,and offers functions of storage and password protection under loss of power.The result of test indicates that the meter is highly accurate and powerful in anti-interference capability. |
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| Keywords: | ARM7 Three-phase three-wire AD637 Remote measurement Phase sequence detection Protection under loss of power |
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